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2 years ago

I need help with question 2

Mathematics

2 answers:

emmasim [6.3K]2 years ago

6 0

Answer:

Step-by-step explanation:

Since BD and DC are congruent, we know that DA bisects <BAC.

This means that <BAD and <CAD are congruent.

We can set up an equation for that.

3x+7=10x-7

Subtract 3x from both sides.

3x-3x+7=10x-3x-7

7=7x-7

Add 7 to both sides.

7+7=7x-7+7

14=7x

Divide both sides by 7.

x=2

Plug that back into expression for m<CAD.

10x-7

10(2)-7

20-7

13 degrees.

ANEK [815]2 years ago

4 0

Answer:

Step-by-step explanation:

Angle CAD and angle BAD are congruent.

10x - 7 = 3x+ 7

10x - 3x = 7 + 7

7x = 14

(7x)/7 = 14/7

x = 2

Plug in x as 2.

10(2) - 7

20 - 7

= 13

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3 years ago

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SVETLANKA909090 [29]

Answer:

A system of the equation of a circle and a linear equation

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Step-by-step explanation:

Let us verify our answer

A system of the equation of a circle and a linear equation

Let an equation of a circle as $x^2+ y^2 = 1$ ..........(1)

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substitute (2) in (1)

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A system of the equation of a parabola and a linear equation

Let equation of Parabola be $y^2 = x$

and linear equation y = x

substitute

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2 years ago

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Tema [17]

I think you multiply it by 4 on both sides

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3 years ago

Read 2 more answers

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Answer:

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Step-by-step explanation:

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